Vacuum Rabi splitting with a single quantum dot in a photonic crystal nanocavity

T. Yoshie, A. Scherer, J. Hendrickson, G. Khitrova (), H. M. Gibbs, G. Rupper, C. Ell, O. B. Shchekin and D. G. Deppe
Additional contact information
T. Yoshie: Electrical Engineering, California Institute of Technology
A. Scherer: Electrical Engineering, California Institute of Technology
J. Hendrickson: The University of Arizona
G. Khitrova: The University of Arizona
H. M. Gibbs: The University of Arizona
G. Rupper: The University of Arizona
C. Ell: The University of Arizona
O. B. Shchekin: The University of Texas at Austin
D. G. Deppe: The University of Texas at Austin

Nature, 2004, vol. 432, issue 7014, 200-203

Abstract: Abstract Cavity quantum electrodynamics (QED) systems allow the study of a variety of fundamental quantum-optics phenomena, such as entanglement, quantum decoherence and the quantum–classical boundary1,2,3,4,5,6,7,8,9. Such systems also provide test beds for quantum information science. Nearly all strongly coupled cavity QED experiments have used a single atom in a high-quality-factor (high-Q) cavity. Here we report the experimental realization of a strongly coupled system in the solid state: a single quantum dot embedded in the spacer of a nanocavity, showing vacuum-field Rabi splitting exceeding the decoherence linewidths of both the nanocavity and the quantum dot. This requires a small-volume cavity and an atomic-like two-level system5,10. The photonic crystal11 slab nanocavity—which traps photons when a defect is introduced inside the two-dimensional photonic bandgap by leaving out one or more holes12—has both high Q and small modal volume V, as required for strong light–matter interactions13. The quantum dot has two discrete energy levels with a transition dipole moment much larger than that of an atom14,15,16, and it is fixed in the nanocavity during growth.

Date: 2004
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DOI: 10.1038/nature03119

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